Nut-lock.



No. 887,483: PATENTED MAY 12, 1908.

R. E. SGHARZ.

NUT LOCK.

APPLICATION FILED DEO.26,1907.

@j 7 /iyz WITNESSES: IN VENTOR W fma ffiaj A TTO THE NuRRIs versus co., wAsnmorozv, u c.

UNITED STrZiTES I NUT-LOOK.

Application filed December 26, 1907.

Specification of Letters Patent.

Patented May 12, 1908.

Serial No. &08,026.

To all whom it may cm'zccrn:

Be it known that I, RICHARD E. Soimuz, citizen of United States, residing at Oakland, in the county of Alameda and State of (.ali fornia, have invented new and useful improvements in Nut-Locks, of which the folsecure nuts to their belts in such fashion as to prevent the nuts The invention consists of the parts and the construction and combination of parts as hereinafter .more fully described and claimed, having reference to the accompanying drawings, in which- Figure l is an end view. Fig. 2 is a central vertical sectional view. Fig. 3 is a perspective view of the locking ring.

A represents a threaded bolt providedwith any suitable number of lengthwise extending grooves 2. 3 is a nut fitting this bolt, and having also \a series of grooves i at right angles to, and intersecting its threads. Preferably, for purposes hereafter to be stated, the number of grooves in the nut will not be precisely the same as the number in the bolt, but preferably one more or one less. The outer side of the nut around its threaded perforation is chambered and under-reamed to rovide an undercut groove 5 circumscribmg the bolt hole, and designed for the purpose of housing and securing the nut-locking device 1n position.

The nut-locking device is preferably made of spring wire and comprises a shank portion 6 to fit registering grooves 2 4 in the bolt and nut, and a ring or segmental portion 7 arranged at right angles to the stem 6.

In practice, the device is operated by screwing the nut on to to serve its purpose of holding parts of the machinery, etc., in place, and to bring one of the grooves in the nut opposite one of the grooves in the bolt, to form a circular passage, into which is next inserted the shank member 6. The circular spring 7 adjoining the stem, is then forced under or into the loosening or coming oil.

l an under-cut groove in its outer end and havl the bolt tight enough l under-cut llange or groove 5 in the end of the nut, the free end of the circular portion 7 bei mg bent slightly downward, as shown at S, l to form a projecting portion which engages the bottom of the groove, and is designed to press the portion 7 snug in under the overhanging ledge of the groove in the nut. The number of grooves in the bolt and on the nut may vary, but preferably the number in one would be odd, as compared with an even number on the other part, so that there will be relatively di'll'crent distances between the grooves in the bolt and nut; and in consequence, the nut never need be turned but 1 a small fraction of a revoh'ition to bring two i opposed grooves B l into register to allow l for the insertion of the locking device. This l permits a very line adjustment of the nutl lock, which is not usually possible in devices of this character. l

7 of the locking device is has sullicient mexpand mto The ring portion made springy, and always herent elasticity to cause it to i the under-reaming of the nut. r Having thus described my invention, what i I claim and desire to secure by Ilietters Patent is 1. A nut-lock a plurality of longitudinal grooves, fitting the bolt, said not being provided with consisting of a bolt having a nut inthe ing a plurality of longitudinal grooves tending from the first-named groove wardly through the nut and threads thereof, and a spring nular portion sprung into engagement with y and housed within the under-cut groove and l l l in tersecting having an having a straight portion engaging matching grooves in the nut and bolt whereby the nut is prevented from. turning relative to the bolt. i l. A nut-lock consisting of a bolt having a l plurality of longitudinally eXtending grooves, l a nut adapted to [it said bolt said nut having an under-cut groove in its outer face and having a series of parallel grooves leading i from the under-cut groove and intersecting the threads of the nut, and a member having an cxpansiblc ring-portion adapted. to be sprung into engagement with the under-cut portion to lit matching portions of grooves in the nut and bolt.

5 Q. A nut-loch consisting ol a bolt having ol longitudinally extending lit said bolt said groove in the nut and having a right-angled i a plurality grooves, a not adapted to nut having an under-cut groove in its outer face and having a series of parallel grooves leading from the under-cut groove and intersecting the threads of the nut, and a member having an expansible ring-portion adapted to be sprung into engagement With the under-cut groove in the nut and having a right angled portion to fit matching portions of grooves in the nut and bolt, said 10 ring portion having a projection adapted to engage the bottom of the under-cut groove to press the ring portion snugly into said groove.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- 1-5 IIGSSGS.

RICHARD E. SOHARZ. l/Vitnesses:

LILLA SoHARZ, ROBERT C. YOUNG. 

